https://sam.ensam.eu:443 The DSpace digital repository system captures, stores, indexes, preserves, and distributes digital research material. Fri, 10 Jul 2026 11:33:12 GMT 2026-07-10T11:33:12Z http://hdl.handle.net/10985/12354 Direct measurement of local constitutive relations, at the micrometre scale, in bulk metallic alloys PLANCHER, E; MAURICE, C; LOISNARD, D; RUPIN, N; MARIJON, Jean-Baptiste; MICHA, Jean-Sébastien; ROBACH, Odile; CASTELNAU, Olivier; BOSSO, E; STODOLNA, J; PETIT, J; FAVIER, Véronique Multiscale models involving crystal plasticity are essential to predict the elastoplastic behavior of structural materials with respect to their microstructure. However, those models are often limited by a poor knowledge of the local constitutive behavior. This article reports a method to measure the mechanical behavior directly, at the micrometre scale, in bulk crystalline materials. Local strain and stress states were evaluated at the surface of a bent stainless steel crystal by combining total strain measurements – performed with the digital image correlation technique on optical images – with elastic strain measurements obtained by Laue microdiffraction. A local constitutive relation was measured, in an efficient nondestructive way, without the need for full-field simulations. The method was validated by a comparison between the measured local behavior and the macroscopic behavior of the single crystal. Sun, 01 Jan 2017 00:00:00 GMT http://hdl.handle.net/10985/12354 2017-01-01T00:00:00Z PLANCHER, E MAURICE, C LOISNARD, D RUPIN, N MARIJON, Jean-Baptiste MICHA, Jean-Sébastien ROBACH, Odile CASTELNAU, Olivier BOSSO, E STODOLNA, J PETIT, J FAVIER, Véronique Multiscale models involving crystal plasticity are essential to predict the elastoplastic behavior of structural materials with respect to their microstructure. However, those models are often limited by a poor knowledge of the local constitutive behavior. This article reports a method to measure the mechanical behavior directly, at the micrometre scale, in bulk crystalline materials. Local strain and stress states were evaluated at the surface of a bent stainless steel crystal by combining total strain measurements – performed with the digital image correlation technique on optical images – with elastic strain measurements obtained by Laue microdiffraction. A local constitutive relation was measured, in an efficient nondestructive way, without the need for full-field simulations. The method was validated by a comparison between the measured local behavior and the macroscopic behavior of the single crystal.